• 60% strength kills and prevents swimming pool algae
• Active ingredient is a polyquaternary ammonium (poly-quat) polymer at 60% w/w — the highest poly-quat concentration in Regal’s Canadian Alg Out range
• Non-metallic algaecide: contains no copper or other metal salts
• Amber liquid, mild odour, pH 6.0 to 8.0

Regal®’s Canadian Pool Care Guide states: “Algaecides should be added after every shock treatment.”

Safety, handling and storage (from the Regal ALG OUT 60 Canadian Safety Data Sheet, issued 23 April 2024)

• Signal word: WARNING. H302 — Harmful if swallowed. H400 — Very toxic to aquatic life.
• “Do not contaminate water, food or feed by storage or disposal.”
• Storage: “Store in a cool, dry, well-ventilated area away from incompatible materials.” The SDS gives a freezing point below 0°C, so protect from freezing in winter storage.
• “Do not reuse empty containers without commercial cleaning or reconditioning. Empty containers retain product residue and can be dangerous.”
• Incompatible materials: none known. Even so, never mix this product with other pool chemicals in a container — add each to the pool water separately.